BB325BZ / GCN585128

Source

Notices

GCN Circulars : Daniel Perley detected optical afterglow with the P60. Also detected by RAPTOR. 5m follow up featureless spectrum z < 2.1.

XRT - didn't do much interesting. Just faded.

BAT GRB analysis: T90 2.3s

Best UVOT position (GCN Circular 15768) RA (J2000) = 02:31:33.78 = 37.89076 (deg.) Dec (J2000) = -01:35:43.4 = -1.59539 (deg.) with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence).

Sent email to analysists to update position on 30 Jan 2014. on 31 Jan 2014 Paul Dyer said:
Hi Keith,
OK, will do.
Paul Dyer - NRAO Data Analyst 

VLBA started at 0355UT. GRB was at 0323UT - so we were 30 mins late. Oh well.

VFASTR Data

Data copied to /lustre/aoc/users/kbannist/vlbagrb/vfastr-data/tns_bb325bz_2

Adam says no detections and lots of RFI.

Discussion

Observations

Observers Log

VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BB325BZ
Observer:       Bannister, Keith
Project type:   VLBA
Obs filename:   bb325bzcrd.*
Date/Day:       2014JAN29/029
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
     0355  Begin file                                                           
           VCLOCK OK (NL: 0.022); UT1-UTC OK (-0.13)                            
           GPS delta < 10us (BR: 2.6us)                                         
           Operator: T. Perreault                                               
0355-0434 *MK not observing; major winter storm on mountain      WEA    100   39
           dish had 3"+ of snow.                                                
0355-0356 *ALL SITES: didn't record first scan.                  SW     900    9
0355-0434 %KP elevated system temperatures on channels           INT     25    9
           7 and 8, possible RFI.                                               
     0428  HN observing ends                                                    
     0431  NL, BR observing ends                                                
     0434  End.                                                                 


Downtime Summary:
   Total downtime : 57 min
   Percentage downtime of observing: 14.6%
   Average downtime per hour : 8.8 min

    Total scheduled observing time (# Antennas): 390 min (10)

Notes:
    * = Entries where data was affected.
    % = Entries where data may have been affected.
    & = Entries where the site tech was called out.
  WEA = Weather entries.
  MF# = Maintenance form or major downtime category associated with a problem.
  %AD = The percentage of an antenna affected by a problem.
  AMD = Total antenna-minutes downtime for a problem.
 Tsys = System Temperature (TP/SP x Tcal/2)
  ACU = Antenna Control Unit
  FRM = Focus/Rotation Mount
  RFI = Radio Frequency Interference
  VME = Site control computer
   CB = Circuit Breaker
 vclock = Program that compares site clock time to a standard.

Additional info from Tony

No, we weren't observing. However, this was my first time processing one
and I wanted to make sure I had the extra time. I did need some extra time
to remove MK from observing by removing it from the observe.tx file, sending
it back out, and running queueVex to unqueue it from the observe.tx file on
the wide-band control computer.

Also, while KP was observing the DBEs weren't set up correctly, so apparently
there is no data from this site. Everything else should be OK, however.

Tony

-- KeithBannister - 2014-01-29
Topic revision: r3 - 2014-10-09, KeithBannister
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